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Titolo:
Variation in zinc efficiency among and within Aegilops species
Autore:
Cakmak, I; Tolay, I; Ozkan, H; Ozdemir, A; Braun, HJ;
Indirizzi:
Cukurova Univ, Dept Soil Sci & Plant Nutr, TR-01330 Adana, Turkey CukurovaUniv Adana Turkey TR-01330 & Plant Nutr, TR-01330 Adana, Turkey Cukurova Univ, Dept Field Crops, TR-01330 Adana, Turkey Cukurova Univ Adana Turkey TR-01330 Field Crops, TR-01330 Adana, Turkey CIMMYT, TR-06511 Ankara, Turkey CIMMYT Ankara Turkey TR-06511CIMMYT, TR-06511 Ankara, Turkey
Titolo Testata:
JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE-ZEITSCHRIFT FUR PFLANZENERNAHRUNG UND BODENKUNDE
fascicolo: 3, volume: 162, anno: 1999,
pagine: 257 - 262
SICI:
1436-8730(199906)162:3<257:VIZEAA>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
DEFICIENT CALCAREOUS SOILS; LEAF RUST; SALT TOLERANCE; GRAIN-YIELD; WHEAT; RESISTANCE; IMPROVEMENT; SPELTOIDES; GENOTYPES; CEREALS;
Keywords:
Aegilops tauschii; Aegilops speltoides; Aegilops triuncialis; Triticum turgidum; zinc deficiency; zinc efficiency;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Cakmak, I Cukurova Univ, Dept Soil Sci & Plant Nutr, TR-01330 Adana, Turkey Cukurova Univ Adana Turkey TR-01330 tr, TR-01330 Adana, Turkey
Citazione:
I. Cakmak et al., "Variation in zinc efficiency among and within Aegilops species", J PLANT NU, 162(3), 1999, pp. 257-262

Abstract

Fifteen accessions of Aegilops tauschii (DD), 10 of Ae. speltoides (SS) and 8 of the tetraploid Aegilops species sharing the U genome were used to study the influence of varied zinc (Zn) supply on development of Zn-deficiency symptoms, and on shoot dry weight and Zn concentration. Plants were grownin a Zn-deficient calcareous soil under greenhouse conditions with (+Zn = 5 mg kg(-1) soil) and without (-Zn) Zn supply. Four accessions of wild tetraploid wheat, Triticum turgidum var. dicoccoides (BBAA), a group known for its high sensitivity to Zn-deficiency, were used in the experiments for comparison. As expected, the accessions of wild T. turgidum var. dicoccoides showed the highest sensitivity to Zn deficiency, and had more severe leaf symptoms of Zn deficiency (whitish-brown necrotic patches). Among the Aegilops species, leaf symptoms of Zn deficiency were, in general, more distinct in Ae. tauschii (DD) and least in Ae. speltoides (SS). Zinc efficiency, expressed as the percentage of shoot dry weight produced under conditions of Zndeficiency compared to Zn supply, averaged, 15% for T. turgidum, 32% for Ae. tauschii, 52% for Ae. speltoides and 61% for the tetraploid Aegilops species carrying the U genome. Differences in Zn efficiency among and within Aegilops species and T. turgidum were significantly correlated with the Zn amount per shoot, but not with the Zn amount per unit dry weight of shoots. The results show that Aegilops species can be exploited as an important genetic source for Zn efficiency genes, particularly Ae. speltoides var. ligustica (SS) and Ae. triuncialis (UUCC). Transfer of these genes to cultivatedmodem wheat may bring about a greater variation in Zn efficiency in wheat,and facilitate production of Zn-efficient modern wheat cultivars for Zn-deficient soil conditions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 07:42:19